SIST EN 15520:2007
Thermal spraying - Recommendations for constructional design of components with thermally sprayed coatings
Thermal spraying - Recommendations for constructional design of components with thermally sprayed coatings
This European Standard applies for thermal sprayed coatings. It contains basic recommendations for the design of components, which have to be completely or partially coated. The recommendations apply for new manufacturing as well as for repair of worn components. The coating may be of metallic, metal-ceramic, oxide-ceramic materials or polymers.
Thermisches Spritzen - Empfehlungen zum konstruktiven Gestalten von Bauteilen mit thermisch gespritzten Schichten
Diese Europäische Norm gilt für thermische Spritzschichten. Sie enthält grundsätzliche Empfehlungen zur
Gestaltung von Bauteilen, die komplett oder teilweise beschichtet werden müssen. Die Empfehlungen gelten
sowohl bei der Neufertigung als auch bei der Instandsetzung von z. B. verschlissenen Bauteilen. Die
Beschichtung kann metallisch, metallkeramisch, oxidkeramisch sein oder aus Kunststoff bestehen.
Projection thermique - Recommandations sur la conception des assemblages d'éléments comportant un revetement déposé par projection thermique
La présente Norme européenne s’applique aux revêtements déposés par projection thermique. Elle comprend des recommandations générales sur la conception des éléments qui doivent être revêtus, que ce soit en totalité ou en partie. Ces recommandations s’appliquent à la fabrication d’éléments neufs mais aussi à la réparation d’éléments usés. Le revêtement peut être en métal, en cermet, en oxyde-céramique ou en polymères.
Vroče brizganje - Priporočila za konstrukcijsko oblikovanje komponent s prevlekami, nanesenimi z vročim brizganjem
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Thermal spraying - Recommendations for constructional design of components with thermally sprayed coatingsProjection thermique - Recommandations sur la conception des assemblages d'éléments comportant un revetement déposé par projection thermiqueThermisches Spritzen - Empfehlungen zum konstruktiven Gestalten von Bauteilen mit thermisch gespritzten SchichtenTa slovenski standard je istoveten z:EN 15520:2007SIST EN 15520:2007en,fr25.220.20Površinska obdelavaSurface treatmentICS:SLOVENSKI
STANDARDSIST EN 15520:200701-december-2007
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15520August 2007ICS 25.220.20 English VersionThermal spraying - Recommendations for constructional designof components with thermally sprayed coatingsProjection thermique - Recommandations sur la conceptiondes assemblages d'éléments comportant un revêtementdéposé par projection thermiqueThermisches Spritzen - Empfehlungen zum konstruktivenGestalten von Bauteilen mit thermisch gespritztenSchichtenThis European Standard was approved by CEN on 20 July 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15520:2007: E
EN 15520:2007 (E) 2 Contents Page Foreword.3 Introduction.4 1 Scope.5 2 Normative references.5 3 Applications and specific properties of thermally sprayed coatings.5 4 Basic rules for design of components with thermal sprayed coatings.6 5 Design of components for partial coating by thermal spraying and final machining.7 6 Machining and post-treatment of thermal sprayed coatings.7 7 Instructions for design - Symbolic representation of the sprayed coating on drawings - Test instructions in the parts list.8 8 Examples for design suitable for spraying.8 Bibliography.18 Figures Figure 1 — Thermal spraying of plane surfaces.10 Figure 2 — Design of rotational symmetrical parts (thermal spraying of external surfaces).11 Figure 3 — Design of rotationally symmetrical parts (thermal spraying of internal surfaces).12 Figure 4a) — Partial coating of an internal surface standard spray gun.13 Figure 4b) — Complete coating of an internal surface with special internal spray gun.13 Figure 5a) — Coating pulled continued around chamfered edge.13 Figure 5b) — Coating pulled continued around rounded edge.13 Figure 6 — Examples of design for parts avoiding excessive edge pressure.14 Figure 7 — Example of a lift piston, parent metal: Steel EN 10088-3-1.4571
Designation of coating according to EN 14665.15 Figure 8 — Example of a pump shaft, parent metal: Steel EN 10083-1 - C35+N.16 Tables Table 1 — Process related features and specific properties of thermal sprayed coatings.6 Table 2 — Basic rules and arguments.7 Table 3 — Customary minimum dimensions for internal spraying.9 Table 4 — Example of a parts list for finished pump shaft (see Figure 8b).17
EN 15520:2007 (E) 3 Foreword This document (EN 15520:2007) has been prepared by Technical Committee CEN/TC 240 “Thermal spraying and thermally sprayed coatings”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2008, and conflicting national standards shall be withdrawn at the latest by February 2008. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.
EN 15520:2007 (E) 4 Introduction Thermal spraying is applied to improve the surface properties of work pieces in order to increase the wear resistance, the electrical conductivity or the electrical resistance, to achieve corrosion resistance for the pertinent service conditions, to improve sliding behaviour or, to provide heat insulation. Recommendations for thermal spraying are contained in EN 14616.
EN 15520:2007 (E) 5 1 Scope This European Standard applies for thermal sprayed coatings. It contains basic recommendations for the design of components, which have to be completely or partially coated. The recommendations apply for new manufacturing as well as for repair of worn components. The coating may be of metallic, metal-ceramic, oxide-ceramic materials or polymers. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 14665, Thermal spraying — Thermally sprayed coatings — Symbolic representation on drawings 3 Applications and specific properties of thermally sprayed coatings Due to their structure, thermal sprayed coatings possess properties which markedly distinguish them from bulk materials. An appropriate basic structural design and a suitable parent metal have to bear any mechanical loading. Usually, thermal sprayed coatings do not increase the strength of the parent work piece. Some process related features and specific properties of thermal sprayed coatings are summarised in Table 1.
EN 15520:2007 (E) 6
Table 1 — Process related features and specific properties of thermal sprayed coatings Process related features Specific properties of thermal sprayed coating Components made of almost every material can be coated by thermal spraying. Not every spraying procedure is appropriate for all applications. Coatings with properties completely different from the parent material are possible. — Coatings can be sprayed with different spraying materials side by side, one upon another, or mixing into one another (graded coatings). Usually the effect of the residual stress in the coating rises with increasing coating thickness. Usually the heat input caused by spraying is so low, that it is possible to avoid structural transformation or deformation.
The heat input by fusing self-fluxing alloys or diffusion annealing may cause structural transformation or deformation.
If the coating is not post heat treated the bond strength mainly depends on mechanical adhesive properties. If the coating is post heat treated the bond strength depends on diffusion and the coating is densified.
The ability to apply the spraying process is practically independent of the size of the component.
Some geometric dimensions e.g. internal bores with too small a diameter may limit the spray ability.
Components
with complicated shapes can be coated, if appropriate spraying equipment is used. Sprayed coatings are susceptible to edge loading, point and line loading and im
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SLOVENSKI oSIST prEN 15520:2006
PREDSTANDARD
julij 2006
Vroče brizganje - Priporočila za konstrukcijsko oblikovanje komponent s
prevlekami, nanesenimi z vročim brizganjem
Thermal spraying - Recommendations for constructional design of components with
thermally sprayed coatings
ICS 25.220.20 Referenčna številka
oSIST prEN 15520:2006(en)
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
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EUROPEAN STANDARD
DRAFT
prEN 15520
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2006
ICS
English Version
Thermal spraying - Recommendations for constructional design
of components with thermally sprayed coatings
Projection thermique - Recommandations sur la conception Thermisches Spritzen - Empfehlungen zum konstruktiven
des assemblages d'éléments comportant un revêtement Gestalten von Bauteilen mit thermisch gespritzten
déposé par projection thermique Schichten
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 240.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same
status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15520:2006: E
worldwide for CEN national Members.
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prEN 15520:2006 (E)
Contents Page
Foreword.3
Introduction .4
1 Scope .5
2 Normative references .5
3 Applications and specific properties of thermally sprayed coatings .5
4 Basic rules for design of components with thermally sprayed coatings .6
5 Design for preparation of components and work pieces for pre-treatment for thermal
spraying .7
6 Chip cutting and post-treatment of thermally sprayed coatings.7
7 Instructions for design - Symbolic representation of the spray coating on drawings - Test
instructions in the parts list.8
8 Examples for design suitable for spraying .8
Bibliography .17
Figure
Figure 1 — Thermal spraying of plane surfaces . 10
Figure 2 — Design of rotational symmetrical parts (thermal spraying of outside surfaces). 11
Figure 3 — Design of rotationally symmetrical parts (thermal spraying of intside surfaces). 12
Figure 4a — Partial coating of an inside surface standard spray gun. 12
Figure 4b — Complete coating of an inside surface with special internal spray gun. 12
Figure 5 — Detail of a shaft: Pre-treated for spraying, masked, sprayed, masking removed, finished . 13
Figure 6a — Coating pulled around chamfered edge . 13
Figure 6b — Coating pulled around rounded edge. 13
Figure 7 — Examples of design for parts avoiding excessive edge pressure. 13
Figure 8 — Example lift piston, parent metal: Steel EN 10088-3-1.4571 Designation of coating
according to EN 14665 . 14
Figure 9 — Example pump shaft, parent metal: Steel EN 10083-1 - C35+N. 15
Tables
Table 1 — Process related specialities and specific properties of thermally sprayed coatings . 6
Table 2 — Basic rules and arguments. 7
Table 3 — Customary minimum dimensions for inside spraying . 9
Table 4 — Example of a parts list for finished pump shaft (see Figure 9b). 16
2
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prEN 15520:2006 (E)
Foreword
This document (prEN 15520:2006) has been prepared by Technical Committee CEN/TC 240 “Thermal
spraying and thermally sprayed coatings”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
3
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prEN 15520:2006 (E)
Introduction
Thermal spraying is applied to improve the surface properties of work pieces in order to for example to
increase the wear resistance, the electrical conductivity or the electrical resistance, to achieve corrosion
resistance for the pertinent service conditions, to improve sliding behaviour or, to provide heat insulation a. o.
Recommendations for thermal spraying are contained in EN 14616.
4
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prEN 15520:2006 (E)
1 Scope
This European Standard applies for thermal spray coatings. It contains basic recommendations for the design
of components, which have to be completely or partially coated. The recommendations apply for new
manufacturing as well as for repair of worn components. The coating may be of metallic, metal-ceramic,
oxide-ceramic or plastics.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 14665, Thermal spraying — Thermally sprayed coatings — Symbolic representation on drawings
prEN 15311, Thermal spraying — Components with thermally sprayed coatings — Technical supply
conditions
EN ISO 12944-3, Paints and varnishes — Corrosion protection of steel structures by protective paint
systems — Part 3: Design considerations
EN ISO 14920, Thermal spraying — Spraying and fusing of self-fluxing alloys
EN ISO 14921, Thermal spraying — Procedures for the application of thermally sprayed coatings for
engineering components
EN ISO 14924, Thermal spraying — Post-treatment and finishing of thermally sprayed coatings
3 Applications and specific properties of thermally sprayed coatings
Due to their structure, thermally sprayed coatings possess properties which markedly distinguish them from
solid materials. An appropriate basic structural design and a suitable parent metal have to bear the loading.
Usually, thermally sprayed coatings do not increase the strength of the parent work piece.
Some process related specialities and specific properties of thermally sprayed coatings are summarised in
Table 1.
5
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prEN 15520:2006 (E)
Table 1 — Process related specialities and specific properties of thermally sprayed coatings
Process related specialities Specific properties of thermally sprayed coating
Components made of nearly every material can be Not each spraying procedure can be used rich in meaning
coated by thermal spraying. for all applications.
If the coating is not post heat treated the bond strength
—
only depends on adhesive properties.
Coatings with properties completely different to the
—
parent metal are possible.
Coatings can be sprayed with different spray materials The residual stress in the coating rises with increasing
side by side, one upon another, or flowing into one coating thickness.
another (graded coatings).
The heat input caused by spraying is so low, that no The heat input by fusing self-fluxing alloys or diffusion
structural transformation or deformation will occur. annealing may cause structural transformation or
deformation.
The ability to apply the spray process is practically Limits exist regarding geometrical dimensions, e. g. in case
independent of the size of the component. of inner side coatings or holes with too small an inner
diameter.
Components with complicated forms can be coated, if Spray coatings are susceptible to edge loading, point and
appropriate spray equipment is used. line loading and impact stresses if not thermally post
treated.
Are
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